The recent discovery of a previously unknown species of deep-sea fish, the *Architeuthis dux*, has sent shockwaves through the scientific community. Scientists had long believed that the *Architeuthis dux* was a solitary creature, but the new findings suggest that it may be a social animal. The *Architeuthis dux*, which is a type of squid, is characterized by its enormous size, and can reach a length of up to 60 feet. These findings, scientists believe, will lead to further research into the social behavior of this fascinating creature.
Which choice most effectively combines the sentences at the underlined portion?
A. The *Architeuthis dux*, a type of squid, is characterized by its enormous size, and it can reach a length of up to 60 feet. These findings, scientists believe, will lead to further research into the social behavior of this fascinating creature.
B. The *Architeuthis dux*, which is a type of squid, is characterized by its enormous size, and it can reach a length of up to 60 feet. These findings, scientists believe, will lead to further research into the social behavior of this fascinating creature.
C. The *Architeuthis dux*, a type of squid, is characterized by its enormous size, and can reach a length of up to 60 feet. These findings, scientists believe, will lead to further research into the social behavior of this fascinating creature.
D. The *Architeuthis dux*, a type of squid, is characterized by its enormous size, and can reach a length of up to 60 feet. These findings, scientists believe, will lead to further research into the social behavior of this fascinating creature.
The best way to combine the sentences is to use a comma after the word "size" and to add the conjunction "and" to the second sentence. This creates a grammatically correct sentence and maintains the flow of the passage.